import router from './router'
import {useUserStore} from '@/store/user'
import {usePermissionStore} from '@/store/permission'
import {ElMessage} from 'element-plus'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import {getToken} from './utils/storage' // get token from cookie
import getPageTitle from './utils/get-page-title'

NProgress.configure({showSpinner: false}) // NProgress Configuration

const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist

router.beforeEach(async (to, from, next) => {
    // start progress bar
    NProgress.start()

    // set page title
    document.title = getPageTitle(to.meta.title)

    // determine whether the user has logged in
    const hasToken = getToken()

    const userStore = useUserStore()

    const permissionStore = usePermissionStore()

    if (hasToken) {
        if (to.path === '/login') {
            // if is logged in, redirect to the home page
            next({path: '/'})
            NProgress.done() // hack: https://github.com/PanJiaChen/vue-element-admin/pull/2939
        } else {
            const hasRoles = userStore.roles && userStore.roles.length > 0
            if (hasRoles) {
                next()
            } else {
                try {
                    // get user info
                    // note: roles must be a object array! such as: ['admin'] or ,['developer','editor']
                    const {roles, routes} = await userStore.getInfo()
                    // generate accessible routes map based on roles
                    const accessRoutes = await permissionStore.generateRoutes({
                        roles,
                        routes
                    })
                    //路由权限
                    accessRoutes.forEach((route) => {
                        router.addRoute(route)
                    })

                    // hack method to ensure that addRoutes is complete
                    // set the replace: true, so the navigation will not leave a history record
                    next({...to, replace: true})
                } catch (error) {
                    // remove token and go to login page to re-login
                    await userStore.resetToken()
                    ElMessage.error('权限不足无法登录')
                    next(`/login?redirect=${to.path}`)
                    NProgress.done()
                }
            }
        }
    } else {
        /* has no token*/

        if (whiteList.indexOf(to.path) !== -1) {
            // in the free login whitelist, go directly
            next()
        } else {
            // other pages that do not have permission to access are redirected to the login page.
            next(`/login?redirect=${to.path}`)
            NProgress.done()
        }
    }
})

router.afterEach(() => {
    // finish progress bar
    NProgress.done()
})
